Combined clock and burglar alarm



y 5, 1932- J. M. CODY ET AL 1,365,743

COMBINED CLOCK AND BURGLAR ALARM Filed Aug. 24, 1951 42 5 3mm, IdamesMCoa'y Y John Efihodes 4 o Patented July 5, 1932 UNETED STATESPATENT OFFICE J'All/IES M. CODY AND JOHN E. RHODES, OF SEATTLE,WASHINGTON COMBINED CLOCK AND BURGLAR ALARM Application filed August 24,1931. Serial No. 558,982.

Ourinvention relates to a combined burglar alarm and alarm clock, and isparticularly an improvement on the patent to James M. Cody, No.1,675,878.

Q It is an object of our present invention to devise a mechanism whichcan be employed as a burglar alarm, attached to a door knob or connectedto be moved by the opening of a window or the like, which can alsofunction in a normal manner as an alarm clock, whether or not it isarranged to'function at the same time as a burglar alarm.

It is an object, then, to combine in one mechanism of simpleconstruction an ordinary household alarm clock and a burglar alarm ofthe type indicated, without detracting from the efficiency of either.

Our invention comprises the novel parts and novel combination andarrangement thereof as shown in the accompanying drawing, described inthe specification, and as will be more particularly defined by theclaims. In the accompanying drawing we have shown our invention in theform which is at present preferred by us.

Figure 1 is a face view of our device. Figure 2 is a side elevation ofthe device with parts broken away and shown in section. Figure 3 is adetail front elevation, parts of the clock casing and face beingremoved.

Figures 4, 5 and 6 are detail sectional views substantially on the line5-5 of Figure 3.

Our burglar alarm may be associated with alarm clocks of varying types,and that illustrated, and which will now be described, will beunderstood as representative of any suitable alarm clock. It comprisesthe casing 1, the base 10, the time mechanism, including a gear 11, andalarm mechanism which will be described in detail hereafter. The casing1 may serve as a bell, or another bell may be employed, as indicated at29.

Associated with the bell, whatever form it may take, is a striker 28,the arm 2 of which is pivoted at 20 within the casing, and hasescapement dogs 21 and 22 cooperating with the escapement wheel 23. Thiswheel is arranged to be rotated by the spring (mot shown), and as ameans for turning off the alarm this wheel may have a pin 24, which maybe engaged by the pin 25 controlled by the handle 26, so that the alarmmay be turned off at will after it has begun to strike.

To initiate striking of the alarm, the alarm mechanism includes a timecontrolled wheel as 3, connected for instance by a pinion 31 to the timewheel 11 previously referred to. This pinion is rotatable upon andmovable axially of the shaft 32. This shaft carries a radiallyprojecting pin 33, which is engageable within a notch 34 within the hubof the wheel 3. The spring arm 4 secured in the frame 14 engagestheopposite end of the wheel 3, and normally tends to hold the notch 34astride of the pin 33. This position is shown in Figure 4. The'pin 33may be displaced therefrom by rotation of the shaft 32 to set the alarmto go off at a definite time, for upon the wheel 3 rotating, the pinwith the wheel 3 is released for axial movement of the wheel 3 under theinfluence of the spring arm 4. This mechanism is old in alarm devicesand by itself forms no part of the present invention;

The spring arm 4 carries a dog 42 at its free end, which, when the partsare in the position'of Figure 4that is to say, when the alarm isreleased for strikingdoes not engage the striker arm 2. When the partsare in the position shown in Figure 5, however, the dog 42 engagesbehind the striker arm 2 and prevents vibration of the latter. Thislatter position corresponds to the position of parts when the alarm isshortly to be sounded.

According to our invention, the finger 5 is adapted to engage the springarm 4, this finger having an inclined tip 54 for this purpose, so thatit may lift the dog 42 and disengage it upon occasion from the strikerarm 2, thus permitting the alarm to be sounded. As a means for movingthe finger 5, various devices may be arranged. We have employed anoscillatory shaft 6 supported in the casing 1, or in an extension 16thereof, and having fingers and 61, by means of which itmay be securedtoa door knob K or alike member. By this means the entire casing. andcombined parts may be suspended from a door knob, hanging pendant fromthe mem- 5, resting upon a ledge 15.

be depressed and its inclined tip 54 to raise the spring arm 4, thussetting off the alarm.

The time-controlled alarm may function normally even though the clock bepositioned upon the door knob ready for operation as a burglar alarm.The alarm may be turned off by depressing the handle and the pin tointercept the pin 24. The user thus has a clock for telling time, analarm to awaken him at a given hour, and a burglar alarm.

The base may be connected by a cord or string S to window sashes or likeclosures, so that upon movement of the sash the casing will beoscillated with respect to the fingers and 61, thus effecting release ofthe striker 2 and the sounding of the alarm.

hat we claim as our invention is:

1. In combination, in a clock, alarm mechanism including a vibratorystriker and means to prevent vibration of said striker,

"x; a member supported in the clock and adapted to be oscillated ineither direction from a normal position upon entrance of a burglar, andmeans to move said first means from operative position, thereby to allowvibration of the striker, upon oscillation ofsaid member in eitherdirection.

2. In combination with a clock, alarm mechanism associated therewith andincluding a vibratory striker, a dog to prevent vibration of saidstriker, and a flexible arm supporting said dog, a shaft'supported foroscillation in the clock, means to secure said shaft to adoor knob orthe like, to be oscillated upon turning the knob, and means movable.upon oscillation of said shaft to flex the flexible arm and to removethe dog from operative position, thereby to allow vibration of thestriker.

3. In combination with a clock, alarm mechanism associated therewith andincluding a vibratory striker, a dog to prevent vibration of saidstriker, and a flexible arm supporting said dog, a shaft supported foroscillation in the clock, means to secure said shaft to a door knob orthe like, to be oscillated upon turning the knob, means movable uponoscillation of said shaft to flex the flexible arm and to remove the dogfrom operative position, thereby to allow vibration of the striker, andother means manually operable to prevent or permit vibration of thestriker.

4:. In combination with a clock, alarm mechanism associated therewithand including a vibratory striker, a rotary escapement wheel and dogs onthe striker cooperating therewith to vibrate the striker, atime-controlled wheel, a shaft upon which said wheel is journaled andalong which it is axially movable, a spring arm having a dog adapted tointercept the striker and prevent its vibration, said spring arm whennot engaged with the striker, holding said time-controlled wheel towardsone end of its shaft, means upon said shaft and cooperating cam meansupon said wheel for moving the wheel in opposition tothe spring towardsthe other end of the shaft, thereby to position the dog tointercept thestriker, an oscillatory shaft supported in the clock and adapted to besecured upon a door knob or the like to support the clock pendanttherefrom, and a finger having an inclined tip adapted for engagementbeneath the spring arm to lift the dog from engagement with the striker,said finger being operatively connected to said oscillatory shaft toengage the spring arm upon movement of the said shaft in eitherdirection.

Signed at Seattle, King County, Wash ington, this 18th day of August,1931.

JAMES M. CODY. JOHN E. RHODES.

